Media Server 25.1
Media Server Help

# Identify the Language of Speech

To identify the language of speech

1. Create a new configuration to send to Media Server with the `process` action, or open an existing configuration that you want to modify.

2. In the `[Session]` section, add a new analysis task by setting the `EngineN` parameter. You can give the task any name, for example:

       [Session]
       Engine0=Ingest
       Engine1=SpeechLanguageId

3. Create a new section to contain the settings for the task, and set the following parameters:

   `Type` | The analysis engine to use. Set this parameter to `LanguageID`.
   Input | (Optional) The audio track to process. If you do not specify an input track, Media Server processes the first audio track produced by the ingest engine.
   Languages | (Optional) The list of languages to consider when running language identification. If you know which languages are likely to be present in the media, OpenText recommends setting this parameter because restricting the possible languages can increase accuracy and improve performance. For a list of supported languages with language codes, see Speech Analysis Supported Languages.
   ClosedSet | When you set this parameter to `FALSE`, Media Server can decide that the language is unknown. For more information, see the Introduction.
   Mode | The type of language identification task to run. Set this parameter to one of the following options: `Boundary` - Language identification seeks to determine boundaries in the audio where the language changes, and returns results for the time between boundaries. `Segmented` - The audio is divided into fixed-size segments and Media Server does not consider previous segments when running analysis. You can use this mode to determine the language if there are multiple languages present in the audio, but this mode does not identify the exact boundary points at which the language changes. Media Server outputs a record in the `SegmentedResult` track for each analyzed segment, and one or more records in the `Result` track (Media Server starts a new record if the detected language changes). `Cumulative` - The audio is divided into fixed-size segments and every result is based on analysis of the current segment and all of the previous segments. You might use this mode if you are processing a video file and expect the audio to contain only one language or you want to identify the primary language that is spoken. Media Server outputs a record in the `SegmentedResult` track for each analyzed segment, and one record in the `Result` track when analysis has finished. NOTE: Cumulative mode is not suitable for analyzing continuous streams.
   SegmentDuration | (Optional, default `30s`) The amount of audio to analyze as a single segment. This parameter is ignored in boundary mode.

   For example:

       [SpeechLanguageId]
       Type=LanguageID
       Languages=ENUK,DEDE
       Mode=Cumulative
       SegmentDuration=30s

4. Save and close the configuration file. OpenText recommends that you save your configuration files in the location specified by the `ConfigDirectory` parameter.

Copyright 2024 Open Text
Version 25.1 | Last updated January 2025

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Product: Knowledge Discovery Media Server 25.1

Topic Title: Identify the Language of Speech